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At a factory, each worker is remunerated according to a salary grade G

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At a factory, each worker is remunerated according to a salary grade G  [#permalink]

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New post 27 Sep 2018, 04:31
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At a factory, each worker is remunerated according to a salary grade G that is at least 1 and at most 7. Each worker receives a monthly wage W, in dollars, determined by the formula W = 1140 + 45(G − 1). How many more dollars per month a worker with a salary grade-7 receives than a worker with a salary grade of 1?

(A) $135
(B) $270
(C) $405
(D) $540
(E) $600

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At a factory, each worker is remunerated according to a salary grade G  [#permalink]

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New post 27 Sep 2018, 05:58
1,140 + 45 (7-1) = 1,140 + 270 = 1,410 that is for grade 7

For grade 1 = 1,140 + 45 (1-1) = 1,140

1,410 - 1,140 = 270 answer choice B

A quicker way to notice this is that 1,140 is fixed for both so it doesn’t matter and that 45 will be zero for grade 1

So the difference will be 45 (7-1) = 270

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Re: At a factory, each worker is remunerated according to a salary grade G  [#permalink]

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New post 27 Sep 2018, 06:12
Bunuel wrote:
At a factory, each worker is remunerated according to a salary grade G that is at least 1 and at most 7. Each worker receives a monthly wage W, in dollars, determined by the formula W = 1140 + 45(G − 1). How many more dollars per month a worker with a salary grade-7 receives than a worker with a salary grade of 1?

(A) $135
(B) $270
(C) $405
(D) $540
(E) $600


Difference is \({1140 + 45(7 − 1)} - {1140 + 45(1 − 1)}\)

Or, Difference is \((1140 + 45*6 - 1140 + 45*0)\)

Or, Difference is \(45*6= 270\), Answer must be (B)
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Re: At a factory, each worker is remunerated according to a salary grade G &nbs [#permalink] 27 Sep 2018, 06:12
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